Răspuns:
CH2=CH2+HOH---> CH3-CH2OH
c= mdx100/ms----> md,alcool= cxms/100= 15x400/100=g=70g alcool
Explicație:
revenind la ecuatie, si stiind, Vm=22,4 l/mol,M,alcool= 46g/mol
22,4l..etena.........46g alcool
x..............................70g
x=V=34 l etena